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<script>
    a = 56
    b = 56*(1-0.23)
    console.log("女生有%d人",b)

    r=80
    s=3.14*80^2
    c=2*3.14*80
    console.log("面积是%d",s)
    console.log("周长是%d",c)


    d=90
    p=3.14/180*d
    console.log("90度角的弧度是%f",p)


    sum=89
    day=89/24
    hour=89%24
    console.log("89小时是%d天%d小时",day,hour)

    var a = 10;
    var sum = a-- + --a + a++ + ++a + a++ + ++a + a++;
              10  +  8  + 8   +  10 +  10 +  12 +  12
    console.log(a);/* 13 */
    console.log(sum); /* 70 */


    people=56
    part=23

    people_1=41
    part_1=part/people*people_1
    console.log("应该出动%d人才能和玫瑰班比例大致相同",part_1.toFixed(0))
</script>
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